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At a certain location in Africa, compass...

At a certain location in Africa, compass points `12^(@)` west of geographic north. The north tip of magnetic needle of a dip circle placed in the plane of magnetic meridian points `60^(@)` above the horizontal. The horizontal component of earth's field is measured to be 0.16G. The magnitude of earth's field at the location is

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The earth.s lies in the vertical plane `12^(@)` west of the geopraphic meridian meridian making an angle of `60^(@)` (upwards) with the horizontal ( magnetic south to magnetic north) direction . Magnitude = 0.35 G.
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